1.The rapid decline of the Y chromosome seems to have ground to a halt at least tens of millions of years ago.
Y染色体的快速衰退似乎在数千万年前就陷入了停滞。
2.There has been a rapid decline, just since 1970's, in the number of students majoring in mind-expanding fields like history and mathematics.
20世纪70年代以来，学习思维扩展专业，比如历史和数学的学生人数锐减。
3.Even while just standing in one place, a rapid decline in the number of signal bars can be observed depending on how the phone is gripped.
即使是站在一个地方不动，信号强度格数也会急速减少，这可以通过用户手持手机的方式观察到。
4.Although a total flip may be hundreds or thousands of years away, the rapid decline in magnetic strength is already damaging satellites.
虽然总的翻转也许是数百年和数千年以后，磁场强度的迅速减弱已经正在损害人造卫星。
5.But he cautioned: "It is not a boom. It's not going to offer the prospect of a rapid decline in the unemployment rate. "
但他也警告说，“这并不是经济荣景，并不意味着失业率可能迅速降下来。”
6.It has a very rapid decline curve and an extremely low recovery factor of less than 5%.
弹性驱动的产量递减曲线下降很快，且采收率极低（小于5%）。
7.Measles vaccination was implemented in the child vaccination programme in Denmark in 1987 and produced a rapid decline in the incidence.
麻疹疫苗接种实施了儿童免疫接种计划，丹麦于1987年，制作了一个快速下降的发病率。
8.But even though sales of digital music are growing quickly, they are not growing fast enough to offset the rapid decline in CD sales.
尽管数码音乐的销售额飞速增加，但仍未能抵消急剧下滑的CD销量。
9.Health concerns over cigarette smoking and lawsuits against tobacco companies have caused a rapid decline in the number of tobacco farms.
对于吸烟的健康忧患以及真对烟草公司的诉讼大大地减少了烟草农场的数目。
10.Biological persity -- the incredible variety of life on Earth that sustains us -- is in rapid decline.
生物多样性——我们赖以为生的地球上难以置信的大量物种——正在迅速减少。